The best midnight movies conjure a community experience, pleasing audiences who want to see reactions to the insanity onscreen. While many touchstones of the genre consist of notoriously strange and subversive visions that are primed for indie theaters — “The Rocky Horror Picture Show,” “The Room,” the works of David Lynch — the rise of home video, cable and, eventually, the darkest corners of the internet recontextualized fandom to include friends who want to introduce each other to